I took a half day off yesterday.

昨天我休假半天。

《牛津词典》

Tuesday is her half day.

星期二她只工作半天。

《牛津词典》

At the same time, he has to train full day on weekends and half day on Tuesday, Wednesday and Thursday.

同时，他必须在周末进行全天训练，在周二、周三和周四进行半天训练。

youdao

She says people would not even notice a difference in taste with three grams, or one-half teaspoon, less salt per day.

VOA: special.2010.01.27

Maybe you find yourself in Las Vegas and you get married for a day and a half and then realize that this wasn't such a good idea.

你可能在拉斯维加斯,一天半内闪婚,突然意识到好像不太妥。

耶鲁公开课 - 心理学导论课程节选

Like in high school, every day I would be in school for like six and half hours.

我在高中的时候，每天都会在学校学习六个半小时。

耶鲁的忙碌生活 - SpeakingMax英语口语达人

Bobby had enjoyed himself immensely, and gone a half day without pants of any kind.

NPR: Excerpt: 'The Prince of Frogtown'

His calculations suggest the UK has just 1 and half day's gas supply in storage.

BBC: UK gas prices surge on supply fears

Women regularly spent a half day getting their hair "permanented" for a ball.

WSJ: What Life Was Like in 1776